Stack Overflow
Q&A for professional and enthusiast programmers
TeX - LaTeX
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Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Japanese Language & Usage
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Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Physics
Q&A for active researchers, academics and students of physics
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Mi Yodeya
Q&A for those who base their lives on Jewish law and tradition and anyone interested in learning more
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
User Experience
Q&A for user experience researchers and experts
Mathematics
Q&A for people studying math at any level and professionals in related fields
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Server Fault
Q&A for professional system and network administrators
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Academia
Q&A for academics and those enrolled in higher education
Answers OnStartups
Q&A for entrepreneurs looking to start or run a new business
Chinese Language & Usage
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
